Corkscrew



FIG. 1 is a front plan view of a corkscrew showing our new design, the rear view being a mirror image thereof;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top, front right side perspective view thereof; and,

FIG. 7 is a top, rear, left side perspective view thereof. 

The ornamental design for a corkscrew, as shown and described. 